Windmill-tower



(No Model.)

H. C. ADDIS.

WINDMILL TOWER.

@vi-buenas 51m) am tot 1% @Cf I UNITED STATES t PATENT OEI-ICEo HENRY o. ADDIs, or eoUNeIL` ELUEEs, IOWA.

WlNDMlLL-TOWER.

SPECIFICATION forming part of Letters Patent No. 364,077, dated May 31, 1887.

Application tiled March 19, 1887. Serial No.-2?,1,492. (No mdel.)

To all whom it may concern:

Be it known that I, HENRY C. ADDIS, a citizen ofthe United States, and aresident of Council Bluffs, in the county ot' Pottawattamie and State of Iowa, have invented certain new and useful Improvements in Windmill-Towers or Derricks; and I do hereby declare that the following is a full, clear, and exact -description of the invention,which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which 'form a part of this specification, and in whicl1 p Figure l is a side view of my improved windmill-towerorderrick-frame, and Fig. 2is a view taken atright angles to the former view.

Similar numerals .of reference indicate corresponding parts in both the figures.

My invention has relation to towers for windmills or frames fordcrricks or similar upright frames; and it consists in the improved construction and combination of parts of such a frame, as hereinafter more fully described and claimed.

In the accompanying drawings, the numerals l indicate the two converging posts,which are suitably connected by means of crosspieces 2 and braces 3, and the lower ends of these posts are secured .to two anchor-posts, 4, secured in the ground and provided with cross-pieces 5 at their lower ends, preventing them from being drawn out of the ground. The upper ends of the posts are connected by means 'of cross-pieces 6, having their outer faces inclined, and screw-threaded bolts 7 pass through perforations S in the centers of these cross-pieces, and are provided with nuts 9 at their upper ends, springs 10, of metal orkrubber or any other yielding material, being interposed between the nuts and the faces of the tion of the frame and rendering the frame much lighter than the style of frame usually employed, while this frame will possess the same strength and stability as frame or tower.

The yielding springs interposed between the the old style of nuts and the cross-pieces, and between the r nuts and the lower eyed ends of the guy-ropes or chains, or between either parts only, will serve to cushion or accommodate the contraction and expansion of the guy ropes or chains by cold or heat, preventing atmospheric changes from having anyl i'ntlu'ence on the stability of the frame, and allowing a very slight yield in extremely hard storms, while being sufficiently stift to prevent any yield in ordinary weather. 1

Having thus describedmy invention, I claim and desire to secure by Letters Patent of the United Statesn y 1. In a windmill-tower.- derriek-frame, or other upright frame,4 the combination of two posts having cross-pieces and braces connecting them and converging toward their upper ends, anchor-posts secured in the ground, and

having the lower ends of the posts secured to them, and guy ropes or chains secured at` their upper ends to the cross-pieces connecting the upper ends ofthe posts, and having anchors at their lower ends secured in the ground, as and forv the purpose shown and set forth.

and having cross-pieces nea-r their upper e'nds` formed with inclined outer faces, anchor-posts buried in the ground and having cross -pieces at 2. In a windmill-tower, derrick-frame, orKA their lower ends, and having the lower ends ot the posts secured to them, and guy ropesmor@ chains havingscrew-threaded bolts at their upper ends inserted through the cross-pieces connecting the upperends ofthe posts, and having ICO yielding springs interposed between their nuts In testimony that I claim the foregoing as and the inclined feces of the eross-pieees, and my own I have hereunto aixed my signature having their lower eyed ends secured to nutted in presence of two witnesses. rods having anchor-plates at their lower ends,

`5 and yielding-springs interposed between the Witnesses:

eyes and the nuts, as and for the purpose J. W. MORSE, shown and set forth. D; P. Howns.

HENRY C. ADDIS. 

